Sounds like using the new Canon 7D is the fad for wedding photography. Friend of mine has his own photography business, and he said everybody including him are using them to combine both video and photo for the weddings. He also uses steadicams, along with some other rigs. Pretty insane for a wedding, but i guess it gives him more options, along with more profit haha.
I am also wanting to get some new glass. I might be getting a Sigma 10-20, or try and find a Nikon 80-200 f2.8 or the 17-55 f2.8 for a good deal